Press mechanism



May 21, 1935. R. w. DlNZL PRESS MECHANlSM Filed Jan. 8, 1951 \NVENTOR:

Patented May 21, 1935 PRESS MECHANISM Richard W. Dinzl, Philadelphia,Pa., assignor,

by mesne assignments, to Baldwin-Southwark. Corporation, a corporationof Delaware Application January 8, 1931, Serial No. 507,498

11 Claims. (Cl. 153-10) I My invention relates to press mechanism, andthe object of my invention is to provide a fluidoperated pressparticularly adapted for the crushing or compacting of material-largediameter pipe sections, for instance,-for easier handling.

My invention includes a press which may have plates between which thematerial may be crushed or compacted; one of said plates being fixed tothe cross-head and the other being hinged to the press platen so as tobe capable of movement with respect to the platen when the latter islowered after a compressing or compacting operation. In some instancesit may be possible or desirable to omit the plate carried by thecross-head.

My invention includes a hook designed to be pushed out of the way whenthe press platen rises, so that such hook may engage-a lug orprojection, preferably a roller, carried by the movable plate supportedby the press platen, and sustain the same at one end while its oppositeend, hinged to the platen, lowers. By this means, material crushedbetween the press platen and cross-head or the plates carried therebymay be automatically discharged from the hinged plate as it inclineswhile one end is temporarily supported by the hook as the press platenlowers.

A further object of my invention is to provide cushioning means for thehinged plate so that it may lower gradually upon the press platen, afterit has been released from the hook.

These and other features of my invention are more fully describedhereinafter, reference being had to the accompanying drawing, more oreless diagrammatic in character, in which:

Figure 1 is a front elevation, partly in section, of a press having andcontaining the features forming the subject of my invention;

Fig. 2 is a side elevation, with portions partly broken away to showclearly details comprising my invention;

Fig. 3 is an enlarged sectional view illustrating a detail of myinvention; and

Fig. 4 is a sectional plan view on the line IV-IV, Fig. 3.-

In the crushing or compacting of various ma terials formany purposes,press mechanism of some type is usually employed. In the presentinstance I have shown a press which may be employed for compacting largepipe sections, having rams 8; the latter being connected to the platen 4and operated in any usual manner.

The cross-head carries a plate I0, which may be fixed thereto, and thepress platen 4 carries a plate II, which may be hinged thereto at H",and be- 5 tween these plates III and I I, the material may be crushed orcompacted. In some instances the plate I0 may be omitted and thematerial may be compressed against the under face of the crosshead. Thelift of the press platen during such 1 crushingoperation may be as highas the line XX, Fig. 2.

The plate, II carried by the press platen is provided with a lug orother projection, preferably a roller I2, at one end of the same, asclearly l6 indicated-in Figs. 1 and 2 of the drawing. The

cross-head 8 carries a hook I3, pivotally mounted at I4, and having anoverbalancing portion II so that its normal position is that indicatedin Fig. 2.

When the plate I I is raised by the press platen, the roller I2 carriedthereby engages the lower cam face of the hook I3 and pushes the sameout of the way, so that as the press platen continues to or near thelimit of its upward movement, the 25 hook will underlie the roller I2 ofthe plate I I, and serve as a temporary support for such end of theplate for a short period while the press platen 4 is descending. Whenthe press platen lowers, after a crushing or compacting operation, the30 plate II will lag back and move on its hinge con- .Unless cushioned,this action would be more or less objectionable, on account of noise andpossible displacement of the ,plate, and I provide means permitting theplate I I to move back to the press platen in an easy and gradualmanner.

To this end, the hollow ram 3 may carry a cyl- Inder I5 containing oiland in which a piston I6 is arranged; the latter being carried by a rodI1, connected by links I8 to the plate II, which may have a lug II forsuch connection. When the hook I3 is. in engagement with the roller I2of the plate II as the press platen descends, the piston I6 will beraised in its cylinder, and as soon as the hook releases the plate II,the piston is free to fall in its cylinder; displacing the oil thereinwhich bleeds through the piston; thereby providing sufiicient and properresistance to insure movement of said plate H without clatter ordisarrangement.

To this end the piston "5 may be constructed and arranged as shown inFig. 3. In such view the rod I! as shown as having a reduced end I'lcarrying the piston l6, which is perforated, as indicated at l 6, andprovided with a groove communicating with such perforations. The pistonis held in place by a nut l9 spaced therefrom by a. collar 20, and aplate 2| underlying the piston is loosely mounted on this collar. Theplate 2| may also be perforated, as indicated at 2|; the perforations ofthe same being smaller than the perforations Hi of the piston. When thepiston is lifted, the plate 2! is held back by the oil freely passingthrough the perforations of the piston and out between the bottom of thesame and the plate 2 I. When the piston is lowered the smaller bleedingholes in said plate 2| slow down the movement of the piston so that thelowering is gradual; thereby assuring easy return of the hinged plate lI to its normal position on the press platen.

While I have shown the cylinder I6 as located within the hollow ram andsupported by the same it is obvious that such cylinder might be mountedexternally thereof and conveniently supported by the press platen; theplate H, in such instance, having an extension at the rear of the pressas indicated by dotted lines in Fig. 2, or otherwise disposed so as toprovide proper connection with the piston rod disposed in such cylinder,and such arrangement is within the scope of my invention.

I claim:

1. The combination with press mechanism including a movable press platenand means for imparting vertical movement thereto, of a flat plateoverlying said movable press platen and hinged thereto at one side ofthe same, and selfreleasing means attached to an upper stationaryportion of said press mechanism for tilting said plate with respect toits hinged connection with the movable press platen as the latter startsto lower from the limit of its upward movement.

2. The combination with press mechanism, in-

cluding a cross-head, a vertically reciprocable press platen, and meansfor imparting upward movement to said press platen, a flat plateoverlying said press platen and hinged thereto at one side of the same,and self-releasing means carried by said cross-head for tilting saidplate with respect to its hinged connection with said press platen asthe latter starts to lower from the limit of its upward movement.

3. The combination with press mechanism including a movable press platenand means for imparting upward movement thereto, of a flat plateoverlying said press platen and hinged thereto at one side of the same,and a self-releasing hook pivotally hung from the upper part of thepress mechanism and adapted to engage said plate at one side and tiltthe same with respect to its hinged connection with the press platen asthe latter starts to lower from the limit of its upward movement.

4. The combination with press mechanism, including a cross-head, avertically reciprocable press platen and means for imparting upwardmovement thereto, of a plate hinged to said press platen, and a hookcarried by said cross-head and adapted to engage said plate at one endand cause it to tilt with respect to its hinged connection as the platenstarts to lower from the limit of its upward movement.

5. The combination with press mechanism including a movable press platenand means for imparting vertical movement thereto, of a flat plateoverlying said press platen and hinged thereto at one side of the same,self-releasing means for tilting said plate with respect to its hingedconnection with the platen as the latter starts to lower from the limitof its upward movement, and means for cushioning the movement of saidplate into contact with the plate when said tilting means releases theplate.

6. The combination with press mechanism including a movable press platenand means for imparting vertical movement thereto, of a flat plateoverlying said press platen and hinged thereto at one side of the same,self-releasing means for tilting said plate with respect to its hingedconnection with the platen as the latter starts to lower from the limitof its upward movement, and means for cushioning the movement of saidplate into contact with the platen when said tilting means is released;said cushioning means including a cylinder operatively connected to thepress platen, and a piston in said cylinder operatively connected tosaid hinged plate.

7. The combination with press mechanism, including a base, a cylinder, amovable platen, a cross-head, and connecting parts, oi a plate hinged tothe platen between which and the crosshead material may be compacted,and a pivotally mounted hook carried by the cross=head and adapted toengage said hinged plate when the latter reaches the limit of itsupwardmovement; said hook temporarily sustaining said plate whereby it maytilt and automatically discharge the compacted body.

8. The combination with press mechanism, including a base, a cylinder, amovable platen, a cross-head, and connecting parts, of a plate hinged tothe platen between which and the crosshead material may be compacted, apivotally mounted hook carried by the cross-head and adapted to engagesaid hinged plate when the latter reaches the limit of its upwardmovement; said hook temporarily sustaining said plate whereby it maytilt and automatically discharge the compressed body, and meansoperatively connected to the press platen for cushioning the returnmovement of said plate.

9. The combination with press mechanism, including a base, a cylinder, amovable platen, a cross-head, and connecting parts, of a plate hinged tothe platen between which and the crosshead material may be compacted, apivotally mounted hook carried by the cross-head and adapted to engagesaid hinged plate when the latter reaches the limit of its upwardmovement; said hook temporarily sustaining said plate whereby it maytilt and automatically discharge the compressed body, and means carriedby the press platen for cushioning the return movement of said plate.

10. The combination with press mechanism, including a base, a cylinder,a movable platen, a cross-head, and connecting parts, of a plate hingedto the platen between which and the crosshead material may be crushed, apivotally mounted ho:l. carried by the cross-head and adapted to engagesaid hinged plate when the latter reaches the limit of its upwardmovement; said hook temporarily sustaining said plate whereby it maytilt and automatically discharge the compressed body, a supplementalcylinder operatively connected to the press platen, and a piston mountedin said supplemental cylinder and oper= a,oo1,712

atively connected to said hinged plate for cushioning the returnmovement of the same.

11. The combination with press mechanism, including a base, a cylinder,a ram therein, a movable platen connected to said ram, a cross-head, andconnecting parts, of a plate hinged to the platen between which and thecross-head material may be crushed, a pivotally mounted hook carried bythe cross-head and adapted to engage said hinged plate when the latterreaches the limit of its upward movement; said hook temporarilysustaining said plate whereby it may tilt and automatically dischargethe compressed body, a supplemental cylinder carried by the ram, and a.piston mounted in said supplemental cylinder and operatively connectedto said hinged plate for cushioning the return movement of the same.

I RICHARD W. DINZL.

